java10以内随机数代码

您好，以下是 Java 10 及以前版本的生成随机数的代码示例：

1. 生成一个随机整数：

import java.util.Random;

public class RandomNumberExample {
    public static void main(String[] args) {
        Random rand = new Random();
        int randomNum = rand.nextInt();
        System.out.println("Generated random integer: " + randomNum);
    }
}

2. 生成指定范围内的随机整数：

import java.util.Random;

public class RandomNumberExample {
    public static void main(String[] args) {
        Random rand = new Random();
        int min = 1;
        int max = 100;
        int randomNum = rand.nextInt((max - min) + 1) + min;
        System.out.println("Generated random integer between " + min + " and " + max + " : " + randomNum);
    }
}

3. 生成随机浮点数：

import java.util.Random;

public class RandomNumberExample {
    public static void main(String[] args) {
        Random rand = new Random();
        double randomDouble = rand.nextDouble();
        System.out.println("Generated random double: " + randomDouble);
    }
}

希望能对您有所帮助。